/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.openejb.core.security.jaas;
import org.apache.openejb.util.LogCategory;
import org.apache.openejb.util.Logger;
import org.apache.openejb.util.URLs;
import javax.script.Bindings;
import javax.script.ScriptContext;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
import javax.script.SimpleScriptContext;
import javax.security.auth.Subject;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
import javax.security.auth.login.LoginException;
import javax.security.auth.spi.LoginModule;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URI;
import java.security.Principal;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;
public class ScriptLoginModule implements LoginModule {
private static final Logger log = Logger.getInstance(LogCategory.OPENEJB_SECURITY, "org.apache.openejb.util.resources");
private Subject subject;
private CallbackHandler callbackHandler;
private Map<String, ?> options;
public Set<Principal> principals = new LinkedHashSet<Principal>();
private UserData userData;
private final class UserData {
public final String user;
public final String pass;
public final Set<String> groups = new HashSet<String>();
private UserData(final String user, final String pass) {
this.user = user;
this.pass = pass;
}
}
@Override
public void initialize(final Subject subject, final CallbackHandler callbackHandler, final Map<String, ?> sharedState, final Map<String, ?> options) {
this.options = options;
this.subject = subject;
this.callbackHandler = callbackHandler;
}
private UserData getUserData() throws LoginException {
final Callback[] callbacks = new Callback[2];
callbacks[0] = new NameCallback("Username: ");
callbacks[1] = new PasswordCallback("Password: ", false);
try {
this.callbackHandler.handle(callbacks);
} catch (final IOException ioe) {
throw new LoginException(ioe.getMessage());
} catch (final UnsupportedCallbackException uce) {
throw new LoginException(uce.getMessage() + " not available to obtain information from user");
}
final String user = ((NameCallback) callbacks[0]).getName();
char[] tmpPassword = ((PasswordCallback) callbacks[1]).getPassword();
if (tmpPassword == null) {
tmpPassword = new char[0];
}
final String password = new String(tmpPassword);
return new UserData(user, password);
}
private File getScriptFile(final String path) {
if (path == null || "".equals(path)) {
final File result = new File(System.getProperty("openejb.home"), "conf/loginscript.js");
if (result.exists()) {
return result;
} else {
return null;
}
}
try {
final URI uri = URLs.uri(path);
final File result = new File(uri);
if (result.exists()) {
return result;
}
} catch (final Exception e) {
// no-op
}
{
final File result = new File(path);
if (result.exists()) {
return result;
}
}
{
final File openEjbConf = new File(System.getProperty("openejb.home"), "conf");
final File result = new File(openEjbConf, path);
if (result.exists()) {
return result;
}
}
return null;
}
@Override
public boolean login() throws LoginException {
File script = getScriptFile((String) this.options.get("scriptURI"));
if (script == null) {
script = getScriptFile(System.getProperty("openejb.ScriptLoginModule.scriptURI"));
if (script == null) {
script = getScriptFile(null);
}
}
if (script == null) {
throw new LoginException("No login script defined");
}
final String scriptText;
try {
scriptText = new Scanner(script).useDelimiter("\\Z").next();
} catch (final FileNotFoundException e) {
throw new LoginException("Invalid login script URI.");
}
this.userData = getUserData();
final ScriptEngineManager manager = new ScriptEngineManager();
final ScriptEngine engine = manager.getEngineByName((String) this.options.get("engineName"));
//new context for the execution of this script
final ScriptContext newContext = new SimpleScriptContext();
//creating the bidings object for the current execution
final Bindings bindings = newContext.getBindings(ScriptContext.ENGINE_SCOPE);
bindings.put("user", this.userData.user);
bindings.put("password", this.userData.pass);
final List<String> myGroups;
try {
myGroups = (List) engine.eval(scriptText, newContext);
} catch (final ScriptException e) {
throw new LoginException("Cannot execute login script. Msg: " + e.getMessage());
}
this.userData.groups.addAll(myGroups);
return true;
}
@Override
public boolean commit() throws LoginException {
this.principals.add(new UserPrincipal(this.userData.user));
for (final String myGroup : this.userData.groups) {
principals.add(new GroupPrincipal(myGroup));
}
this.subject.getPrincipals().addAll(this.principals);
clear();
log.debug("commit");
return true;
}
@Override
public boolean abort() throws LoginException {
clear();
log.debug("abort");
return true;
}
@Override
public boolean logout() throws LoginException {
this.subject.getPrincipals().removeAll(this.principals);
this.principals.clear();
log.debug("logout");
return true;
}
private void clear() {
this.userData = null;
}
}